JP3921572B2 - Heat treatment equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat treatment apparatus for a web such as a glass fiber fabric.
[0002]
[Prior art]
As a manufacturing apparatus for applying a coating solution to a glass fiber fabric that is a base material of a printed circuit board and then drying and heat-treating the coating solution, a web made of a glass fiber fabric impregnated with the coating solution is used. It is carried into the heat insulation chamber of the heat treatment device from the bottom, the web is heated and dried in the heat insulation chamber, the direction of the web is changed by the turn roll at the top of the heat insulation chamber, and the web is carried out from the carry-out port below the heat insulation chamber. (Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 5-320382
[Problems to be solved by the invention]
However, in the heat treatment apparatus as shown in Patent Document 1, since the carry-out roll is provided outside the heat insulation chamber, when the web that has become hot inside the heat insulation chamber comes into contact with the carry-out roll outside this heat treatment chamber There is a problem that distortion occurs due to rapid cooling of the web and wrinkles occur.
[0005]
Therefore, in view of the above problems, the present invention provides a heat treatment apparatus in which distortion and wrinkles do not occur even when a web carried out from a heat treatment apparatus is carried out by a carry-out roll.
[0006]
[Means for Solving the Problems]
The present invention relates to a heat treatment apparatus for heating a web of glass fiber fabric or the like, wherein nozzles for blowing hot air to both surfaces of the web are arranged in the heat insulation chamber of the heat treatment apparatus and on both sides of a vertical conveyance path of the web. In addition, the bottom surface of the heat insulation chamber is provided with a carry-in port and a carry-out port, a turn roll is provided in the vicinity of the ceiling portion of the heat insulation chamber, and a blow-out pipe for blowing air toward the rotation axis of the turn roll is provided. A carry-out chamber formed by a heat insulation wall is provided outside the carry-out port of the heat insulation chamber independently of the heat insulation chamber, a carry-out roll is provided in the carry-out chamber, and the web is carried from the carry-in port on the bottom surface. moves upward after, said diverted on the turn roll moves downwardly is carried into the carry-out chamber from the carry-out port, then, a heat treatment apparatus, characterized in that it is carried out from the out port of the discharge chamber A.
[0008]
[Action]
In the heat treatment apparatus of the present invention, since the web carried out from the carry-out port of the heat insulation chamber is structured to be carried out by the carry-out roll in the carry-out chamber, the web is not rapidly cooled by the carry-out roll. The web does not wrinkle or distort.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the heat processing apparatus 10 of the web W which is one Example of this invention is demonstrated based on FIGS. 1-3.
[0010]
The heat treatment apparatus 10 of the present embodiment is an apparatus used for removing the adhesive adhering in the loom process of a woven fabric made of glass fibers by heat-treating the web W.
[0011]
(1) Overall structure of heat treatment apparatus 10 The overall structure of the heat treatment apparatus 10 will be described with reference to FIGS.
[0012]
FIG. 1 is a longitudinal sectional view seen from the front of the heat treatment apparatus 10, and FIG. 2 is a longitudinal sectional view seen from the right side.
[0013]
The heat treatment apparatus 10 includes a heat treatment chamber 12 made of a vertical rectangular parallelepiped and a direction changing chamber 14 provided above the heat treatment chamber 12. The heat treatment chamber 12 is supported by four support columns 16, and the four support columns 16 are erected vertically from a horizontal mounting surface 17.
[0014]
The heat treatment chamber 12 and the direction change chamber 14 are heat insulation chambers in which all walls form a heat insulation structure, and a carry-in port 18 and a carry-out port 20 for the web W are provided on the bottom surface of the heat treatment chamber 12.
[0015]
Below the carry-in port 18, a carry-in chamber 22 surrounded by a heat insulating wall is provided independently of the heat treatment chamber 12. A carry-in roll 26 for feeding the web W is provided outside the carry-in chamber 22 and below.
[0016]
A carry-out chamber 28 is provided below the carry-out port 20 independently of the heat treatment chamber 12, and a carry-out roll 30 is provided therein.
[0017]
On the ceiling surface of the heat treatment chamber 12, passage ports 32 and 34 are provided for the web W to move to the direction changing chamber 14.
[0018]
In the direction change chamber 14, turn rolls 34 and 36 for changing the direction of the web W are provided. Both ends of the rotating shafts of the turn rolls 34 and 36 are rotatable by a seal support portion 74 provided on a pair of bearing holders 60 erected from the mounting surface 17 separately from the heat treatment chamber 12 and horizontally. It is supported with a good posture. The turn rolls 34 and 36 are rotated by a motor 88 with a constant torque (see FIG. 2). A cover member 86 is provided between the direction change chamber 14 and the seal support portion 74 so that the rotation shafts of the turn rolls 34 and 36 can be rotated and sealed from the outside. Further, a blow-out pipe 84 for blowing out high-temperature air is provided inside the cover member 86 so that tar-like substances do not adhere to the bearing of the rotating shaft due to this high-temperature air.
[0019]
Further, the direction change chamber 14 is provided with exhaust pipes 38 and 40 for exhausting the gas inside the direction change chamber 14 to the outside (see FIG. 1).
[0020]
Inside the heat treatment chamber 12, a pair of ducts 42, 44 are provided along the carry-out path of the web W in the vertical direction. Hot air is blown into the ducts 42, 44 along the width direction of the web W. Nozzles 46 and 48 are provided. Two pairs of such a pair of ducts 42 and 44 are provided on the vertical conveyance path from the carry-in port 18 toward the passage port 32 and the vertical conveyance path from the passage port 35 toward the carry-out port 20. Hereinafter, the pair of ducts 42 and 44 from the carry-in port 18 toward the passing port 32 are referred to as upper moving ducts 42 and 44, and the ducts 42 and 44 from the passing port 35 to the carry-out port 20 are referred to as lower moving ducts 42 and 44.
[0021]
A blower duct 50 for sending hot air to each duct and a fan 52 for sending air to the blower duct are provided below the upper moveable ducts 42, 44 and the lower moveable ducts 42, 44. A heating device (not shown) for heating the air sent from the fan 52 is provided.
[0022]
(2) Operation state of heat treatment apparatus 10 The operation state of the heat treatment apparatus 10 having the above-described configuration will be described.
[0023]
The web W in which glue is adhered to the woven fabric made of glass fiber is redirected by the carry-in roll 26, reaches the carry-in chamber 22 having a heat insulating structure, and enters the heat treatment chamber 12 from the carry-in port 18. When the entering web W moves upward between the upper moving ducts 42 and 44, hot air is blown from the pair of nozzles 46 and 48 toward both surfaces thereof, and the glue is removed. The hot air blowing temperature is 180 ° C to 500 ° C.
[0024]
The heat treatment proceeds and reaches the direction changing chamber 14 through the passage port 32 of the heat treatment chamber 12. In the direction change chamber 14, the direction of the web W is first changed to the side by the two sets of turn rolls 34 and 36 that are rotated with a constant torque by the motor 88, and then the direction is changed downward and the heat treatment chamber 12 is changed from the passage port 35. Enter again.
[0025]
The entered web W moves downward between the lower moving ducts 42 and 44, and hot air is blown from the pair of nozzles 46 and 48 while moving downward, and heat treatment is further promoted. Then, it is unloaded from the unloading port 20 of the heat treatment chamber 12 and reaches the unloading chamber 28. In the carry-out chamber 28, the direction is changed by the carry-out roll 30 and is carried out from the side.
[0026]
By doing in this way, the glue adhering to the glass fiber is removed by the heat treatment, and the texture of the web W is not distorted.
[0027]
The basis weight of the web W is 10 to 250 g / m ² and the conveyance speed is 40 to 100 m / min.
[0028]
(3) Structure of carry-in chamber 22 and carry-out chamber 28 The structure of carry-in chamber 22 and carry-out chamber 28 will be described in more detail with reference to FIG.
[0029]
As described above, the carry-in chamber 22 and the carry-out chamber 28 are provided on the bottom surface of the heat insulation chamber 12 independently of the heat insulation chamber 12.
[0030]
The carry-in chamber 22 is composed of a heat insulating wall, and a carry-in roll 26 is provided on the outside thereof. Then, the web W to which the glue is attached is changed in the direction from the horizontal direction to the vertical direction by the carry-in roll 26, carried from the carry-in port 24 of the carry-in chamber 22, and enters the inside of the heat insulating chamber 12 through the carry-in port 18 of the carry-in chamber 22. To do.
[0031]
In this case, since the carry-in chamber 22 has a heat-insulating structure, the heat inside the heat-insulated chamber 12 flows into the carry-in chamber 22 without leaking to the outside, so that the temperature of the heat-insulated chamber 12 is not easily lowered. The temperature also rises due to the heat from the heat insulating chamber 12 and preheats the surface of the web W.
[0032]
The carry-out chamber 28 is constituted by a heat insulating wall, and a carry-out roll 30 is rotatably supported therein, and the dried web W carried out from the carry-out port 20 of the heat-insulated chamber 12 is changed from the vertical direction to the horizontal direction to be carried out. It is carried out from the carry-out port 90 of the chamber 28.
[0033]
In this case, the carry-out chamber 28 has a heat insulating structure, and since the carry-out roll 30 has a temperature higher than room temperature due to the heat flowing from the heat-insulation chamber 12, the web W is rapidly cooled even if it contacts the carry-out roll 30. No distortion or wrinkle occurs on the web W.
[0034]
Moreover, since the carry-out chamber 28 is provided independently of the heat insulation chamber 12, the carry-out roll 30 is easily maintained.
[0035]
【The invention's effect】
As described above, according to the present invention, a carry-out chamber is provided independently of the heat insulation chamber, and the carry-out roll is warmed by providing the carry-out roll inside the carry-out chamber, and the web carried out by the carry-out roll is rapidly cooled. And there is no distortion or wrinkle on the web surface.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a heat treatment apparatus as viewed from the front according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view similarly viewed from the right side surface.
FIG. 3 is a longitudinal sectional view of a carry-in chamber and a carry-out chamber.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Heat processing apparatus 12 Heat insulation chamber 14 Direction change chamber 18 Carry-in port 20 Carry-out port 22 Carry-in chamber 26 Carry-in roll 28 Carry-out chamber 30 Carry-out roll

Claims (1)

In a heat treatment apparatus for heating a web such as a glass fiber fabric,
In the heat insulation chamber of the heat treatment apparatus, on both sides of the conveyance path in the vertical direction of the web, a nozzle that blows hot air on both sides of the web is arranged,
Provide a web inlet and outlet on the bottom of the heat insulation chamber, and provide a turn roll near the ceiling of the heat insulation chamber,
Providing a blow-out pipe for blowing out air toward the rotation axis of the turn roll;
A carry-out chamber formed by a heat insulation wall outside the carry-out port of the heat insulation chamber is provided independently of the heat insulation chamber,
An unloading roll is provided in the unloading chamber,
The web is moved upward after being carried in from the carry-in port on the bottom surface, changed in direction by the turn roll, moved downward, carried into the carry-out chamber from the carry-out port, and then carried out to the carry-out port of the carry-out chamber A heat treatment apparatus which is carried out from

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